Laser Focusing Lens D37 F220 Raytools BS12K Focus 12kw 120BS5900A
High-precision optical focusing lens engineered specifically for 12kW high-power fiber laser cutting systems using Raytools BS12K cutting heads. Manufactured from high-purity imported fused silica with dual-sided anti-reflective (AR) coating, delivering high light transmittance, minimal thermal expansion, and resistance to thermal lensing during continuous heavy-duty metal processing.
Laser Focusing Lens D37 F220
Key Features
-
Premium Fused Silica Substrate: High optical purity, ultra-low internal absorption, and high laser damage threshold designed to withstand continuous 12kW laser power without focal drift.
-
Advanced AR Coating: Double-sided anti-reflective optical coating optimizes transmittance at 1064nm wavelength (>99.5%), significantly reducing internal reflections and energy loss.
-
Precision Geometry: Strict dimensional control ensures precise focal point positioning (F220) and seamless fit within the Raytools BS12K focal unit.
-
Thermal Stability: Minimizes heat accumulation and beam distortion, maintaining consistent edge quality and clean cutting performance on thick metal plates.
-
Direct OEM Compatibility: Built to match original manufacturer specifications for Raytools part number 120BS5900A.
Technical Specifications
| Parameter | Specification |
| Product Type | Fiber Laser Focusing Lens Assembly |
| Original Part Number | 120BS5900A |
| Compatible Cutting Head | Raytools BS12K Focus |
| Maximum Power Capacity | 12kW |
| Outer Diameter (D) | 37 mm |
| Focal Length (F) | 220 mm |
| Operating Wavelength | 1064 nm |
| Material | High-Purity Fused Silica (Quartz) |
| Coating | Dual-sided Anti-Reflective Coating (Transmittance > 99.5%) |
| Edge Thickness | Standard OEM Spec |
| Application | High-Power Fiber Laser Metal Cutting |
Compatibility & Applications
-
Machine Integration: Compatible with CNC fiber laser cutting systems equipped with Raytools BS12K 12kW automatic focus cutting heads.
-
Material Processing: Ideal for high-speed precision cutting of carbon steel, stainless steel, aluminum alloys, brass, and copper plates.
Handling and Maintenance Guidelines
-
Cleanroom Handling: Unpack and install inside a clean, dust-free environment to prevent airborne particle contamination.
-
Protective Gear: Always wear powder-free, lint-free gloves or finger cots. Avoid touching optical surfaces directly.
-
Cleaning Protocol: Clean with high-purity optical grade isopropyl alcohol (>99.9%) and non-abrasive optical wipe tissue using a single-direction wipe.
-
Inspection: Inspect regularly for spatter, residue, or micro-cracks. Replace promptly if surface coating degradation or focal shift is detected. Laser Focusing Lens D37 F220 Laser Focusing Lens D37 F220 Laser Focusing Lens D37 F220